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OE or aftermarket brand for thermostats #4806860
07/06/18 01:31 PM
07/06/18 01:31 PM
Joined: Mar 2004
Posts: 712
GTA, Ontario, Canada
gogozy Offline OP
gogozy  Offline OP
Joined: Mar 2004
Posts: 712
GTA, Ontario, Canada
car is 2004 TSX, thinking of replace the waterpump, thermostat. I had determine to get the OE waterpump, but I wonder if I shall stick with OE or aftermarket thermostat? what aftermarket brand can be trusted? thanks for suggestion.

Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806876
07/06/18 01:52 PM
07/06/18 01:52 PM
Joined: Dec 2006
Posts: 8,417
Illinois
mrsilv04 Offline
mrsilv04  Offline
Joined: Dec 2006
Posts: 8,417
Illinois
OEM. One item that I will never cheap out on, is a thermostat.


2004 Silverado - on its 3rd Jasper engine in less than one year.
Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806884
07/06/18 02:04 PM
07/06/18 02:04 PM
Joined: Dec 2011
Posts: 4,970
North Carolina
rooflessVW Offline
rooflessVW  Offline
Joined: Dec 2011
Posts: 4,970
North Carolina
OE for sure. Test it before you install it.


"Zed's dead baby, Zed's dead."
Re: OE or aftermarket brand for thermostats [Re: rooflessVW] #4806901
07/06/18 02:26 PM
07/06/18 02:26 PM
Joined: Jul 2005
Posts: 30,789
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,789
NY
Originally Posted By: rooflessVW
OE for sure. Test it before you install it.


approved
OE Always.


God Bless Our Troops

Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806903
07/06/18 02:27 PM
07/06/18 02:27 PM
Joined: Dec 2016
Posts: 2,194
VA
maverickfhs Offline
maverickfhs  Offline
Joined: Dec 2016
Posts: 2,194
VA
OEM, do it and forget about it.


2006 Civic EX 202K/AT
2006 Acura TSX 180K/AT
Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806915
07/06/18 02:40 PM
07/06/18 02:40 PM
Joined: Nov 2011
Posts: 3,998
Lima, Ohio, USA
earlyre Offline
earlyre  Offline
Joined: Nov 2011
Posts: 3,998
Lima, Ohio, USA
I just replaced mine. I didn't go OE. I was shopping for them on RockAuto, the only Motorcraft thermostat they had Listed for My car was a 190 Degree thermostat. every other brand, and the one I took out of the car were 180 Degree units.

I ended up getting a Motorad "failsafe" unit. designed so that if it does fail, it fails open. at least that's what the package/ marketing wank says...

they were all listed about the same price...


Mine:
09 Mercury Sable : 6qts AutoQuest(Meijer/Warren) 0w20, WIX 51516
Mine to Maintain:
03 Pontiac Vibe : 4.5qts VWB 5w30,WIX 51394
Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806921
07/06/18 02:44 PM
07/06/18 02:44 PM
Joined: Feb 2013
Posts: 10,992
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 10,992
Phoenix, AZ
OEM

My mechanic put a Stant in my grandparentís Trailblazer and it ran warm, the opening was quite a bit smaller than an OEM one.


2015 Hyundai Sonata 2.4L 87k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806944
07/06/18 03:17 PM
07/06/18 03:17 PM
Joined: Dec 2017
Posts: 417
Massachusetts
VeryNoisyPoet Offline
VeryNoisyPoet  Offline
Joined: Dec 2017
Posts: 417
Massachusetts
I lean towards OEM.

Exercise the thermostat in a pan of boiling water before you install to make sure it opens and closes properly.


1998 V70 GLT / 195k miles [10w-30 Valvoline Syn w/ Maxlife Tech + Mann W917 filter]

"Use yah blinkah!"

"Be nice. The alternative involves an air horn and 7000 lumens of high beam."
Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806956
07/06/18 03:32 PM
07/06/18 03:32 PM
Joined: Mar 2014
Posts: 3,423
NJ
Leo99 Offline
Leo99  Offline
Joined: Mar 2014
Posts: 3,423
NJ
I put a Stant thermostat and radiator cap in my Rav4 as PM at 320,000 miles. The cap failed. The thermostat is working fine. (KoW) After that, everyone said to stick with OEM for caps and thermostats. I have a no-name cap on it now. It works.

Last edited by Leo99; 07/06/18 03:33 PM.

Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles (RIP)
2004 Corolla 125,000 miles
2004 Rav4 370,000 miles
2015 Camry 70,000 miles
Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806959
07/06/18 03:33 PM
07/06/18 03:33 PM
Joined: Nov 2003
Posts: 3,802
Cape Cod, MA
RF Overlord Offline
RF Overlord  Offline
Joined: Nov 2003
Posts: 3,802
Cape Cod, MA
While is highly unlikely you will go wrong with OEM, I've always had good luck with the Stant SuperStat.


Supercharged '03 Mercury Marauder - Trilogy Motorsports #61
PP 5W-30 / MC FL820S

'04 Grand Marquis LS Limited Edition - daily driver

'00 Grand Marquis GS - bad frame/future to be determined
Re: OE or aftermarket brand for thermostats [Re: earlyre] #4806978
07/06/18 04:12 PM
07/06/18 04:12 PM
Joined: Jun 2003
Posts: 17,648
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,648
Deplorable in apple valley, ca
Originally Posted By: earlyre
I just replaced mine. I didn't go OE. I was shopping for them on RockAuto, the only Motorcraft thermostat they had Listed for My car was a 190 Degree thermostat. every other brand, and the one I took out of the car were 180 Degree units.

I ended up getting a Motorad "failsafe" unit. designed so that if it does fail, it fails open. at least that's what the package/ marketing wank says...

they were all listed about the same price...
imported garbage! Not only are those inconsistent regarding the opening temp they stick open when the engine gets slightly above normal operating temps.


02 Wrangler carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: OE or aftermarket brand for thermostats [Re: gogozy] #4806997
07/06/18 04:24 PM
07/06/18 04:24 PM
Joined: Nov 2006
Posts: 20,328
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,328
MA, Mittelfranken.de
OE only 100% Motorad "failsafe" is garbage I wouldn't put in any car.


ASE L1, Master. Deutsch Meisterbrief.
Re: OE or aftermarket brand for thermostats [Re: gogozy] #4809301
07/09/18 01:50 PM
07/09/18 01:50 PM
Joined: Mar 2004
Posts: 712
GTA, Ontario, Canada
gogozy Offline OP
gogozy  Offline OP
Joined: Mar 2004
Posts: 712
GTA, Ontario, Canada
sorry for delay, had a family emergency over the weekend.. it also cause me getting too tired, and worn out, and forgot to put the ATF fill bolt back on the MDX and drove it for ~15km before I realize it.. luckily the car seems fine for now.

thanks for everyone's unanimous advise, definitely will get the OE thermostats!

Re: OE or aftermarket brand for thermostats [Re: gogozy] #4810146
07/10/18 10:44 AM
07/10/18 10:44 AM
Joined: May 2012
Posts: 4,504
Baltimore, Maryland, USA
zzyzzx Offline
zzyzzx  Offline
Joined: May 2012
Posts: 4,504
Baltimore, Maryland, USA
OE or Stant for thermostats.

Re: OE or aftermarket brand for thermostats [Re: gogozy] #4810326
07/10/18 12:56 PM
07/10/18 12:56 PM
Joined: Jan 2004
Posts: 4,333
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,333
California
OE for 80% of the stuff out there. I'll use Stant on older American products. Supposedly Stant now has an "OE Exact" line but unless they are sourcing their Japanese/Korean t-stats from NTCL or Kuhzeh, it might not be.

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